Approximately 80,000 Model 12 trench guns were manufactured between 1941 and 1944, and later production featured a Parkerized metal finish. Careful inspection will reveal four rows of holes in the handguard for barrel heat venting, changed from six during 1917.
Arms of all sorts were in high demand at the onset of the Great War, including a new type of close-quarters combat firearm: the repeating shotgun. Though several designs were explored, only a few made it into the trenches before the Armistice was signed.
I have become interested in U.S. military shotguns, especially the bayonet-equipped “trench guns.” Can you tell me which were the rarest?